Toyotomi RUBI Series User Manual page 90

PORTABLE AIR CONDITIONER
Specialist's Manual
exposing any pipe work shall use any sources of ignition in such a manner that it may lead
to the risk of fire or explosion. All possible ignition sources, including cigarette smoking,
should be kept sufficiently far away from the site of installation, repairing, removing and
disposal, during which refrigerant can possibly be released to the surrounding space. Prior
to work taking place, the area around the equipment is to be surveyed to make sure that
there are no flammable hazards or ignition risks.
Ventilated area
Ensure that the area is in the open or that it is adequately ventilated before breaking
into the system or conducting any hot work. A degree of ventilation shall continue during
the period that the work is carried out. The ventilation should safely disperse any
released refrigerant and preferably expel it externally into the atmosphere.
Checks to the refrigeration equipment
Where electrical components are being changed, they shall be fit for the purpose and to
the correct specification. At all times the manufacturer's maintenance and service guidelines
shall be followed. If in doubt, consult the manufacturer's technical department for
assistance.
The following checks shall be applied to installations using flammable refrigerants:
---The actual refrigerant charge is in accordance with the room size within which the
refrigerant containing parts are installed;
---The ventilation machinery and outlets are operating adequately and are not obstructed;
---If an indirect refrigerating circuit is being used, the secondary circuit shall be checked for
the presence of refrigerant;
---Marking to the equipment continues to be visible and legible. Markings and signs that are
illegible shall be corrected;
---Refrigeration pipe or components are installed in a position where they are unlikely to be
exposed to any substance which may corrode refrigerant containing components, unless
the components are constructed of materials which are inherently resistant to being
corroded or are suitably protected against being so corroded.
Checks to electrical devices
Repair and maintenance to electrical components shall include initial safety checks and
component inspection procedures. If a fault exists that could compromise safety, then no
electrical supply shall be connected to the circuit until it is satisfactorily dealt with. If the fault
cannot be corrected immediately but it is necessary to continue operation, an adequate
temporary solution shall be used. This shall be reported to the owner of the equipment so all
parties are advised.
Initial safety checks shall include:
---That capacitors are discharged: this shall be done in a safe manner to avoid possibility of
sparking;
---That no live electrical components and wiring are exposed while charging, recovering or
signs shall be displayed.
90
GB